CN101856887A - Wood-plastic composite board and manufacturing method thereof - Google Patents
Wood-plastic composite board and manufacturing method thereof Download PDFInfo
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- CN101856887A CN101856887A CN200910029781A CN200910029781A CN101856887A CN 101856887 A CN101856887 A CN 101856887A CN 200910029781 A CN200910029781 A CN 200910029781A CN 200910029781 A CN200910029781 A CN 200910029781A CN 101856887 A CN101856887 A CN 101856887A
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Abstract
The invention provides a wood-plastic composite board which comprises an upper layer plate, a core plate and a lower layer plate, wherein, the two surfaces of the core plate integrally form symmetrical grid structures which are respectively compounded with the upper layer plate and the lower layer plate under hot pressure to form a grid hollow structure respectively; and the upper layer plate, the core plate and the lower plate are prepared from 20-60% of polyolefin particles, 20-70% of wood fiber, 0.1-0.3% of a processing agent, 0.2-0.5% of a coupling agent, 0.1-1% of a lubricant and other additive materials, wherein, the other additive materials can be one or combination of more than two of 0.05-0.1% of a preservative, 0.25-0.35% of a uvioresistant agent, 0.2-0.3% of an antioxidant and 0.06-0.2% of a fire retardant. The wood-plastic composite board of the invention is provided with the grid hollow structures, thereby meeting the requirement of application strengthen and saving materials, and the manufacturing method can be completed on the same production line and has high processing efficiency.
Description
Technical field
The present invention relates to a kind of composite board, be particularly related to a kind of wood-plastic composite panel and preparation method thereof, the wood-plastic clad plate of preparation can be widely used in fields such as water conservancy, highway, railway, architectural engineering and farming and animal husbandry, as waterproof bulkhead, counter dam, wallboard, Pu plate, building template, cabin plate etc.
Background technology
Along with industrial economy development at full speed, discarded plasthetics is difficult to dispose, and these refuses are made the landfill material at present or in accordance with the law, or do refuse disposal.Along with the development of polymer material science and technology, people can carry out recycling with discarded plasthetics, but a large amount of discarded plastic cement but can't be effectively addressed all the time.
So scientific and technical personnel are through developing, can utilize discarded timber to be processed into powder,, add associated additives with the waste plastic powder, melt mixed processing by heat and form mixed powder, this mixed powder is formed the wood-plastic composite panel of using various occasions through extrusion equipment.Yet the composite board of existing processing all is a solid slab, when satisfying the application scenario of certain intensity of supporting surface and thickness, if increase single-piece composite plate thickness, will increase the weight of single plate, and the materials waste.
Summary of the invention
In order to remedy above deficiency, the invention provides a kind of wood-plastic clad plate and preparation method thereof, this wood-plastic clad plate has the lattice-shaped hollow structure, not only satisfy using strength but also save materials, and the method for preparing this Wood-plastic foaming composite board can be finished the working (machining) efficiency height on same production line.
The technical scheme of wood-plastic clad plate described in the present invention is such realization: a kind of wood-plastic clad plate, by top plate, central layer and lower plywood are formed, the lattice-shaped structure of this integrally formed symmetry in central layer two sides, the lattice-shaped structure on this central layer two sides is composited by hot pressing with this top plate and lower plywood respectively, formation has the composite plate of the lattice-shaped hollow structure of isotropic, percentage meter by weight, this top plate, central layer and lower plywood are by 20-60% polyolefin powder, the 20-70% wood fibre, the processing aid of 0.1-0.3%, 0.2-0.5% coupling agent and 0.1-1% lubricant and other add materials processing and form.
As a further improvement on the present invention, percentage meter by weight, these other add one or two or more kinds combination in the fire retardant of the antioxidant of UV resistant agent, 0.2-0.3% of anticorrisive agent that material is 0.05-0.1%, 0.25-0.35% and 0.06-0.2%.
The preparation method of wood-plastic clad plate described in the present invention, adopt the following steps preparation:
Step 1: percentage meter by weight, 20-70% wood fibre and 20-60% polyolefin powder are put into the mixing of high temperature mixer, progressively be warming up to the stirring of 85-95 ℃ of adding 0.2-0.5% coupling agent and be warming up to 100 ℃-120 ℃ maintenances 5-10 minute, and then add the processing aid of 0.1-1% lubricant, 0.1-0.3% and other add material, high-speed mixing 10-20 minute again, be discharged to then to stir in the cold mixer and be cooled to 40 ℃ with bottom discharge, the formation compound;
Step 2: this compound is joined incorgruous awl twin-screw granulating extruder extrude, adopt die face cutting, two-stage wind to send and make compound powder;
Step 3: will this compound powder join the incorgruous awl double screw extruder with mould and extrude, form the central layer that the two sides has symmetrical lattice structure, this central layer is exceptionally straight by the pulling equipment tension; Simultaneously will this compound powder join two groups of incorgruous awl double screw extruders that to have a pair of even surface roller die respectively and extrude, form top plate and lower plywood respectively;
Step 4: after this top plate and lower plywood be covered on this central layer two sides respectively, through the press polish compounding machine this central layer and top plate and lower plywood are combined into one, and, form typing lattice-shaped Hollow composite board by having the coldplate cooling typing of inner cooling circulating water;
Step 5: the composite plate of should finalizing the design is further lowered the temperature by the hauling machine traction and through cooling blower, is processed into wood-plastic clad plate by cutting equipment at last.
As a further improvement on the present invention, in the step 1 these other add one or two or more kinds combination in the fire retardant of the antioxidant of UV resistant agent, 0.2-0.3% of anticorrisive agent that material comprises 0.05-0.1%, 0.25-0.35% and 0.06-0.2%.
Useful technique effect of the present invention is: described wood-plastic clad plate is made up of top plate, central layer and lower plywood, this integrally formed lattice-shaped structure in central layer two sides, and be composited by hot pressing with this top plate and lower plywood respectively, thereby form the composite plate of lattice-shaped hollow structure with isotropic, like this for satisfying under certain support strength situation, when increasing composite plate thickness, can reduce weight, thereby reduce cost.
Compound powder described in the described wood-plastic clad plate preparation method joins the incorgruous awl double screw extruder with mould and extrudes, and forms the central layer that the two sides has symmetrical lattice structure, and this central layer is exceptionally straight by the pulling equipment tension; Meanwhile, this compound powder is joined two groups of incorgruous awl double screw extruders with a pair of even surface roll mould to be extruded, form top plate and lower plywood respectively, after this top plate and lower plywood be covered on this central layer two sides respectively, through the press polish compounding machine central layer and top plate and lower plywood are combined into one, and by having the coldplate cooling typing of inner cooling circulating water, form the typing composite plate, be processed into sheet material by cutting equipment at last, by finishing on the same production line, improve working (machining) efficiency thus.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the synthetic schematic diagram of top plate described in the present invention, central layer and lower plywood;
Fig. 3 is core plate structure schematic diagram described in the present invention.
The specific embodiment
A kind of wood-plastic clad plate is made up of top plate 1, central layer 2 and lower plywood 3, the grating texture of the grid symmetry of this integrally formed symmetry in central layer 2 two sides, the lattice-shaped structure on these central layer 2 two sides is compound by hot pressing with this top plate 1 and lower plywood 2 respectively, thereby forms the lattice-shaped hollow structure respectively.
Adopt following raw materials according:
Reclaim PE 40%
Rice husk meal 59%
Lubricant 0.5%
Coupling agent 0.3%
Antioxidant 0.2%
Prepare wood-plastic clad plate with above raw material according to following steps:
Step 1: with above-mentioned material percentage meter by weight, rice husk meal and recovery PE particle are put into the mixing of high temperature mixer, progressively be warming up to the stirring of 90 ℃ of adding coupling agents and be warming up to 100 ℃ of maintenances 5 minutes, and then adding lubricant and antioxidant, high-speed mixing is 15 minutes again, is discharged to then to stir in the cold mixer to be cooled to 40 ℃ with bottom discharge;
Step 2: this compound is joined incorgruous awl twin-screw granulating extruder extrude, adopt die face cutting, two-stage wind to send and make compound powder;
Step 3: will this compound powder join the incorgruous awl double screw extruder with mould and extrude, form the central layer that the two sides has symmetrical lattice structure, this central layer is exceptionally straight by the pulling equipment tension; Simultaneously will this compound powder join two groups of incorgruous awl double screw extruders that to have a pair of even surface roller die respectively and extrude, form top plate and lower plywood respectively.
Step 4: after this top plate and lower plywood be covered on this central layer two sides respectively, central layer and top plate and lower plywood are combined into one through the press polish compounding machine, and by having the coldplate cooling typing of inner cooling circulating water;
Step 5: the plate that composite setting is good is further lowered the temperature by the hauling machine traction and through cooling blower, is processed into sheet material by cutting equipment at last.
In order to satisfy different purposes,, can also add one or two or more kinds the combination in the fire retardant of the UV resistant agent of anticorrisive agent, 0.25-0.35% of 0.05-0.1% and 0.06-0.2% in the step 1 as characteristics such as anticorrosion, anti-aging or fire-retardant.
Preparing sheet material by above method tests through East China University of Science: its bending modulus reached 671Mpa when thickness was 18mm, bending strength reaches 9.8Mpa; Its bending modulus reached 727Mpa when thickness was 20mm, bending strength reaches 11Mpa.
Claims (4)
1. wood-plastic clad plate, it is characterized in that, by top plate (1), central layer (2) and lower plywood (3) are formed, the lattice-shaped structure of the integrally formed symmetry in this central layer (2) two sides, the lattice-shaped structure on this central layer (2) two sides is composited by hot pressing with this top plate (1) and lower plywood (2) respectively, formation has the composite plate of the lattice-shaped hollow structure of isotropic, percentage meter by weight, this top plate, central layer and lower plywood are by 20-60% polyolefin powder, the 20-70% wood fibre, the processing aid of 0.1-0.3%, 0.2-0.5% coupling agent and 0.1-1% lubricant and other add materials processing and form.
2. a kind of wood-plastic clad plate as claimed in claim 1, it is characterized in that, percentage meter by weight, these other add one or two or more kinds combination in the fire retardant of the antioxidant of UV resistant agent, 0.2-0.3% of anticorrisive agent that material is 0.05-0.1%, 0.25-0.35% and 0.06-0.2%.
3. the preparation method of an a kind of wood-plastic clad plate as claimed in claim 1 is characterized in that, adopts the following steps preparation:
Step 1: percentage meter by weight, 20-70% wood fibre and 20-60% polyolefin powder are put into the mixing of high temperature mixer, progressively be warming up to the stirring of 85-95 ℃ of adding 0.2-0.5% coupling agent and be warming up to 100 ℃-120 ℃ maintenances 5-10 minute, and then add the processing aid of 0.1-1% lubricant, 0.1-0.3% and other add material, high-speed mixing 10-20 minute again, be discharged to then to stir in the cold mixer and be cooled to 40 ℃ with bottom discharge, the formation compound;
Step 2: this compound is joined incorgruous awl twin-screw granulating extruder extrude, adopt die face cutting, two-stage wind to send and make compound powder;
Step 3: will this compound powder join the incorgruous awl double screw extruder with mould and extrude, form the central layer that the two sides has symmetrical lattice structure, this central layer is exceptionally straight by the pulling equipment tension; Simultaneously will this compound powder join two groups of incorgruous awl double screw extruders that to have a pair of even surface roller die respectively and extrude, form top plate and lower plywood respectively;
Step 4: after this top plate and lower plywood be covered on this central layer two sides respectively, through the press polish compounding machine this central layer and top plate and lower plywood are combined into one, and, form typing lattice-shaped Hollow composite board by having the coldplate cooling typing of inner cooling circulating water;
Step 5: the composite plate of should finalizing the design is further lowered the temperature by the hauling machine traction and through cooling blower, is processed into wood-plastic clad plate by cutting equipment at last.
4. the preparation method of wood-plastic clad plate as claimed in claim 3, it is characterized in that other add one or two or more kinds combination in the fire retardant of the antioxidant of UV resistant agent, 0.2-0.3% of anticorrisive agent that materials comprise 0.05-0.1%, 0.25-0.35% and 0.06-0.2% this in the step 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910029781.6A CN101856887B (en) | 2009-04-09 | 2009-04-09 | Wood-plastic composite board and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910029781.6A CN101856887B (en) | 2009-04-09 | 2009-04-09 | Wood-plastic composite board and manufacturing method thereof |
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| CN101856887A true CN101856887A (en) | 2010-10-13 |
| CN101856887B CN101856887B (en) | 2015-04-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012071952A1 (en) * | 2010-12-03 | 2012-06-07 | 湖州新峰木塑复合材料有限公司 | Process for manufacturing raised floor and raised floor manufactured according to same |
| CN106965469A (en) * | 2017-04-25 | 2017-07-21 | 遵义市万美科技有限公司 | Production process of breathable wood-plastic plate |
| CN113799409A (en) * | 2021-09-07 | 2021-12-17 | 东北林业大学 | Preparation method of surface-decorative wood-plastic composite material |
| CN114407320A (en) * | 2021-12-30 | 2022-04-29 | 宁波盒象科技有限公司 | Manufacturing method of logistics turnover box substrate |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU697396B2 (en) * | 1994-01-26 | 1998-10-08 | Peter Sing | Sandwich construction building materials |
| CN2211468Y (en) * | 1994-04-14 | 1995-11-01 | 柏燕 | Briquetting floor |
| CN2665268Y (en) * | 2003-12-10 | 2004-12-22 | 廖志强 | Reinforced honeycomb core clad plate |
| CN1987018A (en) * | 2006-12-18 | 2007-06-27 | 徐肖虎 | Wood-plastic formwork for construction engineering |
-
2009
- 2009-04-09 CN CN200910029781.6A patent/CN101856887B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012071952A1 (en) * | 2010-12-03 | 2012-06-07 | 湖州新峰木塑复合材料有限公司 | Process for manufacturing raised floor and raised floor manufactured according to same |
| CN106965469A (en) * | 2017-04-25 | 2017-07-21 | 遵义市万美科技有限公司 | Production process of breathable wood-plastic plate |
| CN113799409A (en) * | 2021-09-07 | 2021-12-17 | 东北林业大学 | Preparation method of surface-decorative wood-plastic composite material |
| CN114407320A (en) * | 2021-12-30 | 2022-04-29 | 宁波盒象科技有限公司 | Manufacturing method of logistics turnover box substrate |
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| Publication number | Publication date |
|---|---|
| CN101856887B (en) | 2015-04-01 |
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